Electric switch.



D. SCHNElDER.

ELECTRIC SWITCH. APPLICATION FILED APR. l. 916.

I I Patented Jan. 16; 1917.

1 when the pressure o fgithe generated "steamy reaches a predetermined'height andto cause the electricity to flow again when the steam Denim. SCHNEIDER; or sroknnn, wasnrn'e'ron, Assrenon, BY;MES1\TE AssreNMEn'rsj TO THE monnnn-mnnnsnme cynmnnnooivrrnny, or SPOKANE, WAS GTON, A

CORPORATION. J v

, circuit switches and hasior its principal object to construct a switch to'ibe usedin connectlon with radiators wherein steam is generated by heating water with electricresistance heatingzelements and to .50 construct the switch thatLthe fiowof electricity W111, he cutfofl from said heating, elements pressure lowers *heightf Another. obj which may be interposed in an electric circuit which is adapted 0. heatfa resistance element for generatingsteam so that the below the predetermined to so construct the switchthat it maybe adjusted to make and break the circuit at the:

.. specification and appended claims. L I

'- In ,the drawingsz+Figurel shows my switch" attached to a steam radiator. Fig. 2 .lis an enlarged'flfront elevation of the is a section .Onfline .offFig. 3.. Fig, .5 is anelevation of the movable contact mem- I Like numerals of referencelreferto the same parts throughout" the various of the drawings. i i f I In F g '1 6 ShO I t w h ataehed to my impr v d "S e m adiator fu y 7 described inmy Patent.l. T-11 nber?i, 14 1;,888on ELEc'rnIc swrrcrr.

- :1 Specification of Letters Patent.

switch may regulate the steam pressureand construction and cheap of pointed outv in] connection with following:

switch. Fig.3 is asideelevation of Fig. 2' l ooking-inithe -.direction of arrow 3. Fig. .45

ber-okingin the 'directionof arrow 5 in an improved portable electrically-heated m,

diator of June 1,.191 5,3but it is understood .that I thereto, J

resistance heating'f'coils, or elements 2. and" 3 pass "throughjthe "reservoir 'l to heat the. i I 'water' contained therein; The steam generarea by coils 2 and 3 is, conveyed through. ,pip'ese to radiator 5,. plug G is threaded -do"notlimit' the use of *myswitch I fr b I A water ,rese'rvoiris indicated at. 1; and

in the radiator 5 as shown inFi' Q and Bourdon tuhe' 7 is's'ecur'ed to plug 6 so that r steam maypaSs through the aperture 8fin plu'gb tol'the bore or cavity 9"which runs" the. length ofgtube ,Ta'sfar as the; cap 10 which closesthe extremity of tube7.

cap 10 and is pivotally 'connectedfat '17 to nall'ythreaded bore 18 within which, is

A depending support .11 isattachedto, an, extensionpf the-pl'ug 6 'at12, aridpWOtiilly mounted at 18 on-su'pport llisthe lever 14. I Alink 15is PlVOtiLllYjCOIlIlBCtBd317116 tothe ectgis to providea switch" the npper extremity of- .lever'le. "At the 7 lower end of lever-leis provided an interthreaded an adjustmentscrew19 carrying the knurIedheadQO. A hook member 21is pivotedfto thesrew 19m 22 and .a projection' 23 isadaptedto be hooked into a flange M 7 24 which is attachedat25 to aleaf or movable member- 2.6., Member QG ishinged at 27 to a member 28 which" isheld stationaryby Y k .such means, for instance, as a bracket 29 secured to member 28 at 80 and' clainpe'd tofl pipe {Lat 31. Themovable member 26'caii-' ries ametallicdepending member 32 secured thereto by bolt. andnut ineans'asjzshown at r Y 33' and is insulatedtherefromby a washer 3 made ofnon-cpndueting ma ri l. A. p ojection 35 of depending member '32 serves as a movable' contact member. I binding postq36 serves to,

allow jalconnectionofor wire 87fwhichisattached tothe coi1;2.lat 3.8.f Theistationarymember 28, car- I ries' metallic lforks 39 and 40. by, means of Y boltsfl and iflandrthje forksf39 and40-are I insulated from'each otherand fromfthemem f r 1 ,beri28 by thewashers 43 and 4. 4 whicharef constructed: of non coliducting material.

. rherorkee is apertured'iat 45, a) reeeive ne o e of the atta chrnentrplugeti from which: 1 a wire leads tofthe' s 'oiireefofelectricity48 A binding post 49 mounted on fork 39 serves as aconneetion for wire 50 which is attached at its other extremity to coil 3 at 51.

The fork-40 is apertured as at 52 to receive the other pole 53 of the attachment plug 46 and pole 53 is connected to the source ofelectricity 48 by wire 54. Contact member is so positioned that it will normally contact with or engage the fork since the natural spring of tube 7 will force lever 14 in a clockwise direction and hence push member 26 to the left in Fig. 2. 7

Suppose now that attachment plug 46 be placed in the position of Figs. 1 and 2, current will flow from the source of electricity 48 through wire 54, pole 53,fork 52, contact 35, member 34, binding post 36, wire 37, coil 2, conductor 55 which connects coils 2 and 3, coil 3, wire 50, binding post 49, fork 39, then out through the remaining pole of the attachment plug 46', through wire 47 back to the source of electricity 48. The water contained in reservoir 1 .will be converted to.

steam by the heat set up in resistance coils or elements 2 and3' due to the passage'of electricity therethrough, and the steam will rise through pipes 4 to radiator 5 and will pass through aperture 8 tothe bore 9 of the Bourdon'tube 7. As the steam pressure rises the tube 7 will tend to straighten out which will, through the medium of link'15,swing lever 14 in a counter clockwise direction,

.the position of screwlQ so as to require the thus drawing screw 19, hook members 21 and members 26 to the right in Fig. 2 which will withdraw the contact 35 from engagement with the fork 40 and thus interrupt "the path and flow of electricity from the source 18 to the elements .2 and 3. As the steam pressure in radiator 5' and consequently in tube 7 lowers, the tube 7 Will, due to its natural spring or resiliency, return to itsnormal position as shown in Figs. 1 and 2, once more allowing contact, 35 and fork 40 to engagethus permitting electricity to again flow through coils 2 and 3.

By disengaging projection 23 from flange 24' it will be seen that screw 19 may be revolved so as to carry member 21 to the right or left with respect to the bore 18. Supposing screw 19 were to be revolved: so as to project member 21 farther to theleft than is shown in Fig. 2and projection 23 once more hooked to flange 24, it will beseen' that tube 7 will resist this action due to the natural curve of tube7 and hence contact 35 will be forced with addedpressure against fork 40 and it will take a higher steam pres sure in radiator 5'and bore9 to s traighten tube 7 sufiiciently to disengage contact; 35 and fork 40. Thus, it is possible to regulate steam pressuretoreachany reasonable preone specific embodiment of my invention I "adapted to automatically open said circuit at a predetermined pressure of said gas, said means comprisingla closed extremity provided on'said tube, a switch interposed in said circuit and comprising a stationary contact member,ja movable contact member, and means adapted to a djustably connect said closed extremity and said movable member. i I

2. In a device of the character described,

a source of electricity, an electric circuit, a Bourdon tube, means adapted to admit gas to the interior of said tube,1neans adapted to normally holdlsaid circuit closed, means adapted to automatically open said circuit at a predetermined pressure of said gas, said means comprising a closed extremity provided on said tube, a switch :interposed'in said circuit and comprising a stationary! contact member, a movable contact member,

means adapted to 'adjustably connect said closed extremity and said movable member, and means for adjusting said means for automatically breaking said circuit'to' allow g said last mentioned means to actuate at different predetermined pressures .of said gas. 3. In an electric switch, a stationary contact member, a movable contact member hinged to said stationary member, a unitary means normally holding said movable memconnecting saidlever and said movable contact member.

4. In an electric switch, a resilientzeurved hollow tube, means adaptedtoj admit gas to said tube, aclosed' terminal provided on said tube, a linkpivotally connected with said closed terminal, a stationary contact memher, a movable contact member-hinged to c 7 said stationary member and normally held I by the resiliencyof said tube in contact with said stationary member, a pivotally support- 3 ed lever connected to said link, and hookv means connecting said lever and said movable contact member. 7

5. In an electric switch, a resilient curved hollow tube, means adapted to'admit gas.

to said tube, a closed terminal provided. on

said tube,ja link pivotally connected with "said closedterminal, a stationary contact ally supportinglever connected to saidlink,

an adjustment screw'threadably mounted on' I said lever, and a hook member pivoted "to said adjustment screw and movably attached I to said hinged supporting arm.

6. In an electric/switch, a stationarycontact carrying member, fork members mounted on said stationary-member and insulated one from the other and from said station ary member, "a supportin'g'arm hinged tof said stationary member, a second contact member mountedonsaid supporting arm I and normally contacting with one of said fork members, a :Bourdontube, one'terminal of said tube being closed and theother terminal of said tube being open, a link pivotallyr connected with said closedterminal,

a 'pivotally mounted lever said lever being 7 pivotally connectedtosaid link, an adjustsaid hinged supporting arm. 1

ment screw threadably mounted on saidle ver, and ahook member, pivoted to said adjustment screw and I movably attached to In an electricswitch, a stationarycontact carrying member, fork members mount ed on said stationary member and insulated one from the other and from saidstatiom ary member, a binding post provided on one contact member mounted on said supporting arm and normally contacting with the other of said fork members, an insulating member positionedbetween said second contact member and said arm, a binding postpro- 40 o vided on said second contact member, a

I Bourdon tube, one terminal of said tube being' closed, 'a' link pivotally connected with said closed terminal, a pivotally mounted lever, said lever being pivotally connected to said link, an adjustment screw threadably mounted on said lever, and a hook member "pivoted to said hinged supporting arm! In testimony whereof I hereby afiixgmy signature in the presence of two witnesses.

Witnesses: 7 v H. E. SOANTLEBURY,

CONRAD SCHMIDT.

of said fork 'members, a supporting arm hinged to said stationary member,a second 7 35 DANIEL SCHNEIDER Copies of this patent maybe obtained tor five cent: each, by addressing the Commissioner of intents," I

- 'Wash ingt omD. G.' v a v c 

